18975217889 has 8 divisors (see below), whose sum is σ = 19208717472. Its totient is φ = 18741834720.

The previous prime is 18975217883. The next prime is 18975217903. The reversal of 18975217889 is 98871257981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18975217889 - 2⁴ = 18975217873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18975217883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325229 + ... + 379109.

It is an arithmetic number, because the mean of its divisors is an integer number (2401089684).

Almost surely, 2^18975217889 is an apocalyptic number.

It is an amenable number.

18975217889 is a deficient number, since it is larger than the sum of its proper divisors (233499583).

18975217889 is an equidigital number, since it uses as much as digits as its factorization.

18975217889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58207.

The product of its digits is 20321280, while the sum is 65.

The spelling of 18975217889 in words is "eighteen billion, nine hundred seventy-five million, two hundred seventeen thousand, eight hundred eighty-nine".